Pomona Electronics 5286 BNC Connector Plug 75 Ohm Solder

Part Overview

The Pomona Electronics 5286 is a BNC connector plug designed for 75-ohm coaxial cable applications. This male pin connector features solder termination for the center contact and crimp termination for the shield, supporting free-hanging (in-line) mounting configurations. The part is currently active in production and suitable for RF applications up to 4 GHz. Alternative parts may be required when different termination methods, cable compatibility, or operating temperature ranges are needed for specific applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	5286
Manufacturer	Pomona Electronics
Connector Style	BNC
Connector Type	Plug, Male Pin
Impedance	75 Ohms
Contact Termination	Solder
Shield Termination	Crimp
Mounting Type	Free Hanging (In-Line)
Fastening Type	Bayonet Lock
Frequency - Max	4 GHz
Voltage Rating	500 V
Body Material	Brass
Body Finish	Nickel
Center Contact Plating	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution for the Pomona Electronics 5286 is determined by the following critical parameters:

Primary Substitution Criteria:

Connector style (BNC)
Connector type (Plug, Male Pin)
Impedance (75 Ohms)
Contact termination method (Solder)
Shield termination method (Crimp)
Mounting type (Free Hanging/In-Line)
Fastening type (Bayonet Lock)

Secondary Compatibility Factors:

Frequency rating (minimum 4 GHz required)
Voltage rating (minimum 500 V required)
Cable group compatibility
Body material and finish specifications
Dielectric material properties

Parts with identical primary criteria are direct substitutes. Parts with different contact termination methods (crimp instead of solder) or different impedance values (50 Ohms instead of 75 Ohms) are not direct substitutes and require application-level verification.

Parameter Comparison

Part Number	Manufacturer	Contact Termination	Shield Termination	Impedance	Frequency - Max	Voltage Rating	Operating Temperature	Dielectric Material	Product Status
5286	Pomona Electronics	Solder	Crimp	75 Ohms	4 GHz	500 V	Not specified	PTFE	Active
031-70013	Amphenol RF	Crimp	Crimp	75 Ohms	4 GHz	500 V	-65°C ~ 165°C	PTFE	Active
031-71008-1RFX	Amphenol RF	Crimp	Crimp	75 Ohms	2 GHz	500 V	-65°C ~ 165°C	POM Acetal	Not For New Designs
031-71013-RFX	Amphenol RF	Solder	Crimp	75 Ohms	3 GHz	500 V	-40°C ~ 80°C	POM Acetal	Active
31-321	Amphenol RF	Crimp	Crimp	50 Ohms	4 GHz	500 V	-65°C ~ 165°C	PTFE	Active
31-71008	Amphenol RF	Crimp or Solder	Crimp	75 Ohms	2 GHz	500 V	-65°C ~ 165°C	PTFE	Not For New Designs
31-71008-1000	Amphenol RF	Crimp or Solder	Crimp	75 Ohms	2 GHz	500 V	-65°C ~ 165°C	PTFE	Not For New Designs
31-71008-RFX	Amphenol RF	Crimp	Crimp	75 Ohms	2 GHz	500 V	-65°C ~ 165°C	POM Acetal	Not For New Designs
31-71013	Amphenol RF	Crimp	Crimp	75 Ohms	2 GHz	500 V	-65°C ~ 165°C	PTFE	Active

Engineering Selection Recommendations

Direct Substitutes (Solder Termination, 75 Ohms):

031-71013-RFX is the only active substitute with matching solder termination and 75-ohm impedance. This part is suitable for applications where solder termination is required. Note that the frequency rating is 3 GHz (lower than the 5286's 4 GHz) and the operating temperature range is -40°C to 80°C (narrower than typical industrial ranges). Both parts are ROHS3 compliant and suitable for new designs.

Alternative Substitutes (Crimp Termination, 75 Ohms):

031-70013 is an active Amphenol RF part with crimp termination and 75-ohm impedance. It supports the same 4 GHz frequency rating and offers an extended operating temperature range of -65°C to 165°C. This part is suitable for applications where crimp termination is acceptable.

31-71013 is an active Amphenol RF part with crimp termination and 75-ohm impedance. It operates at 2 GHz maximum frequency and -65°C to 165°C temperature range. This part is suitable for lower-frequency applications.

Not Recommended for New Designs:

Parts marked "Not For New Designs" (031-71008-1RFX, 31-71008, 31-71008-1000, 31-71008-RFX) should not be selected for new applications. These parts are available for legacy system support only.

Incompatible Substitutes:

31-321 has 50-ohm impedance and is not compatible with 75-ohm system requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a crimp termination connector instead of solder termination?

A: Crimp and solder terminations are different connection methods. Crimp termination uses mechanical compression, while solder termination uses thermal bonding. The choice depends on your assembly process and cable preparation equipment. If your application requires solder termination specifically, use 031-71013-RFX. If crimp termination is acceptable, 031-70013 or 31-71013 are suitable alternatives.

Q: What is the difference between 75-ohm and 50-ohm impedance?

A: Impedance is a fundamental electrical characteristic that must match the cable and system design. 75-ohm connectors are used in video and cable television applications, while 50-ohm connectors are used in RF and microwave applications. These are not interchangeable. The 5286 is rated for 75-ohm systems only.

Q: Why do some substitute parts have lower frequency ratings?

A: Frequency rating reflects the connector's performance characteristics at high frequencies. Parts with 2 GHz ratings (31-71008, 31-71008-1000, 31-71008-RFX, 31-71013) are suitable for applications below 2 GHz. If your application requires 4 GHz operation, select 031-70013 or 031-71013-RFX.

Q: What does "Not For New Designs" mean?

A: This designation indicates the part is in legacy status. While inventory may be available, these parts should not be selected for new product development. Use active status parts (5286, 031-70013, 031-71013-RFX, 31-71013) for new applications.

Q: Are all these connectors RoHS compliant?

A: Yes, all listed parts are ROHS3 compliant, meeting environmental and hazardous substance restrictions for electronic components.

Q: What cable types are compatible with the 5286?

A: The 5286 is compatible with RG-59, 59A, 59B, 62, 62A, 62B, 62C, and 210 cable groups. Substitute parts may support different cable groups. Verify cable compatibility when selecting an alternative part.

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